Claude Haiku 4.5 vs Sonar Pro
Side-by-side specs, pricing and capabilities. Both models run on Clade under one subscription, so you can switch between them in the same conversation.
Claude Haiku 4.5 comes from Anthropic and Sonar Pro from Perplexity. The practical difference for most people is context, price, and which input types each one accepts.
Claude Haiku 4.5 holds more in a single conversation — 200K tokens against 128K — which matters for long documents and large codebases.
Claude Haiku 4.5 is the cheaper of the two on input tokens at $1.00 / 1M tokens.
| Specification | Claude Haiku 4.5 | Sonar Pro |
|---|---|---|
| Provider | Anthropic | Perplexity |
| Model ID | claude-haiku-4-5-20251001 | sonar-pro |
| Context window | 200K | 128K |
| Max output | 64K | — |
| Input price | $1.00 / 1M tokens | $3.00 / 1M tokens |
| Output price | $5.00 / 1M tokens | $15.00 / 1M tokens |
| Knowledge cutoff | — | — |
| Input types | text, image, file | text, image, file |
| Output types | text | text |
| Plan | Free | Premium |
Which should you use?
Pick Claude Haiku 4.5 when…
- You need the larger context window — 200K against 128K.
- Cost matters: input runs at $1.00 / 1M tokens versus $3.00 / 1M tokens.
- You want longer single responses — up to 64K output tokens.
- You are on the free plan — this model is included without an upgrade.
Related comparisons
Try both on Clade
You do not have to choose. One Clade subscription gives you Claude Haiku 4.5, Sonar Pro, and every other model on the platform.